Newest design with air release valve to ensure you can exchange clean air anytime and avoid the bad taste of water and resistant germs.

Working process:1. Confirm the gift price on the website 2. Confirm the shipping cost on the website3. Send your logo/design to us4. Confirm artwork5. Check out and make payment6. Make sample and send sample photo for confirmation7. Make final production when confirm sample8. Shipping out with tracking NO.